please solve (a) The 7.00- ? and the R = 19.5 ? resistors between points c and d

Question

please solve

(a) The 7.00-?and theR= 19.5?resistors between pointscanddin the figure above are connected in parallel with each other. Thus we can redraw the figure, as shown in the diagram below whereRcdis the equivalent resistance between pointscanddin the original figure.

For the equivalent resistance, we have

This resistance is in series with the 4.00-?and the 9.00-?resistors as shown in the diagram in this step. LetR4represent the 4.00-?resistance andR9the 9.00-?resistance. The total resistanceRabbetween pointsaandbis then

Explanation / Answer

Rcd=7*19.5/(7+19.5) =5.151 Rnet=18.151

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